Highest Quality CLF-C01 Prep 2021

NEW QUESTION 1
What best describes the concept of fault tolerance?
Choose the Correct Answer

• A. The ability for a system to withstand a certain amount of failure and still remain functional.
• B. The ability for a system to grow and shrink based on demand.
• C. The ability for a system to grow in size, capacity, and/or scope.
• D. The ability for a system be accessible when you attempt to access i

Answer: A

Explanation:
Fault tolerance describes the concept of a system (in our case a web application) to have failure in some of its components and still remain accessible (highly available). Fault tolerant web applications will have at least two web servers (in case one fails).

NEW QUESTION 2
If you have a set of frequently accessed files that are used on a daily basis, what S3 storage class should you store them in?
Choose the Correct Answer

• A. Infrequent Access
• B. Reduced Redundancy
• C. Standard
• D. Fast Access

Answer: C

Explanation:
The Standard storage class should be used for files that you access on a daily or very frequent basis.

NEW QUESTION 3
Consolidated billing is managed through what AWS service?
Choose the Correct Answer

• A. AWS TCO
• B. AWS Billing Manager
• C. AWS Consolidated Management
• D. AWS Organizations

Answer: D

Explanation:
AWS Organizations is where you can manage multiple AWS accounts in one place (including it's billing features, such as consolidated billing).

NEW QUESTION 4
What best describes what AWS is?
Choose the Correct Answer

• A. AWS is an online retailer
• B. AWS is the cloud.
• C. AWS is a cloud services provider.
• D. None of the abov

Answer: C

NEW QUESTION 5
What AWS service help you estimate the cost of using AWS vs. an on-premises data center?
Choose the Correct Answer

• A. Cost Explorer
• B. Consolidated Billing
• C. TCO Calculator
• D. None of the above

Answer: C

Explanation:
The TCO (total cost of ownership) calculator helps you estimate the cost of using AWS vs. an onpremises data center.

NEW QUESTION 6
Jeff is building a web application on AWS. He wants to make sure his application is highly available to his customers. What infrastructure components of the AWS cloud allow Jeff to accomplish this goal? (Select all that apply)
Choose the 2 Correct answers:

• A. Availability Zones
• B. Regional Zones
• C. Regions
• D. Data Locations

Answer: AC

Explanation:
As part of AWS' global infrastructure, Regions and Availability Zones allow for backups and duplicate components to be placed in seperate (isolated) areas of the globe. If one region/Availability Zone
were to fail, duplicates in other regions/Availability Zones can be used.

NEW QUESTION 7
How much data can you store in S3?
Choose the Correct Answer

• A. Storage capacity is virtually unlimited.
• B. You can store up to 1 petabyte of data.
• C. Each account is given 50 gigabytes of storage capacity and no more can be used.
• D. You can store up to 1 petabyte of data, then you are required to pay an additional fe

Answer: A

Explanation:
Although there is theoretically a capacity limit, as an S3 user, there is no limited on the amount of data you can store in S3.

NEW QUESTION 8
What is the term used to describe giving an AWS user only access to the exact services he/she needs to do the required job and nothing more?
Choose the Correct Answer

• A. The Least Privilege User Principal
• B. The Principal of Least Privilege
• C. The Only Access Principal.
• D. None of the above

Answer: B

NEW QUESTION 9
What best describes an AWS region?
Choose the Correct Answer

• A. A specific location where an AWS data center is located.
• B. An isolated collection of AWS Availability Zones, of which there are many placed all around the world.
• C. The physical networking connections between Availability Zones.
• D. A collection of DNS server

Answer: B

Explanation:
An AWS region is an isolated geographical area that is is comprised of three or more AWS Availability Zones.

NEW QUESTION 10
What TWO services/features are required to have highly available and fault tolerant architecture in AWS?
Choose the 2 Correct answers:

• A. Elastic Load Balancer
• B. CloudFront
• C. ElastiCache
• D. Auto Scaling

Answer: AD

NEW QUESTION 11
You notice that five of your 10 S3 buckets are no longer available in your account, and you assume that they have been deleted. You are unsure who may have deleted them, and no one is taking responsibility. What should you do to investigate and find out who deleted the S3 buckets?
Choose the Correct Answer

• A. Look at the S3 logs.
• B. Look at the CloudTrail logs.
• C. Look at the CloudWatch Logs.
• D. Look at the SNS log

Answer: B

Explanation:
CloudTrail is logging service that logs actions taken by AWS users in your AWS account, such as creating/deleting S3 buckets, starting/stopping EC2 stances, etc.

NEW QUESTION 12
The concept of elasticity is most closely associated with which of the following?
Choose the Correct Answer

• A. Auto Scaling
• B. Network Security
• C. Serverless Computing
• D. Elastic Load Balancing

Answer: A

Explanation:
Elasticity is the concept that a system can easily (and cost-effectively) both increase in capacity based on-demand and also shrink in capacity based on-demand. Auto Scaling on AWS is specifically designed to (automatically) increase and decrease server capacity based on-demand.

NEW QUESTION 13
Mike is setting up the infrastructure for a web application that requires three EC2 instances to handle the expected demand. However, when testing the application, Mike find that all traffic to the application is being routed to only one of the servers. What AWS feature should he add to his application in order to have traffic evenly distributed between all three servers?
Choose the Correct Answer

• A. Elastic Load Balancer
• B. Auto Scaling
• C. Route 53
• D. CloudFront

Answer: A

Explanation:
An Elastic Load Balancer is designed to evenly distribute incoming web traffic between all servers that are associated with it.

NEW QUESTION 14
What term best describes the AWS pricing model?
Choose the Correct Answer

• A. Pay-all-up-front
• B. Pay-as-you-go
• C. Pay-all-at-end
• D. None of the above

Answer: B

Explanation:
AWS operates on a pay-as-you-go model. No upfront cost or termination fees.

NEW QUESTION 15
If you are using an on-demand EC2 instance, how are you being charged for it?
Choose the Correct Answer

• A. You are charged per second, based on an hourly rate, and there are no termination fees.
• B. You are charged by the hour and must pay a partial upfront fee.
• C. You must commit to a one or three year term and pay upfront.
• D. You are charged per second, based on an hourly rate, and there is a termination fe

Answer: A

Explanation:
On-demand EC2 instances are exactly that, on-demand. There are no upfront or termination fees, and you are charged for each second of usage (based on an hourly rate).

NEW QUESTION 16
Under what circumstances would you choose to use the AWS service CloudTrail?
Choose the Correct Answer

• A. When you want to collect and view resource metrics.
• B. When you want to log what actions various IAM users are taking in your AWS account.
• C. When you want a serverless compute platform.
• D. When you want to send SMS notificaitions based on events that occur in your accoun

Answer: B

Explanation:
CloudTrail is AWS's logging service used to log actions taken by users in your AWS account.

NEW QUESTION 17
What is a main benefit of CloudFront?
Choose the Correct Answer

• A. DNS management
• B. Unlimited storage
• C. Serverless compute capacity
• D. Built-in DDoS protection

Answer: D

Explanation:
CloudFront allows you to cache content at edge locations. When a request is made for that content, the request is sent to an edge location (not your applications hardware), so the edge locations will absorb any DDoS attack and protect your underlining hardware.

NEW QUESTION 18
What are the benefits of DynamoDB? (Select all that apply) Choose the 3 Correct answers:

• A. Supports multiple known NoSQL database engines like MariaDB and Oracle NoSQL.
• B. Automatic scaling of throughput capacity.
• C. Single-digit millisecond latency.
• D. Supports both document and key-value store data model

Answer: BCD

Explanation:
DynamoDB does not use/support other NoSQL database engines. You only have access to use DynamoDB's built-in engine.

NEW QUESTION 19
What are the benefits of AWS Organizations? (Select all that apply)
Choose the 2 Correct answers:

• A. Analyze cost across all multiple AWS accounts.
• B. Automate AWS account creation and management.
• C. Centrally manage access polices across multiple AWS accounts.
• D. None of the abov

Answer: BC

Explanation:
AWS Organizations has four main benefits: 1) Centrally manage access polices across multiple AWS accounts. 2) Automate AWS account creation and management. 3) Control access to AWS services 4) Enable consolidated billing across multiple AWS accounts Analyzing cost is done through the Cost Explorer (or TCO calculator), which is not part of AWS Organizations.

NEW QUESTION 20
What AWS database service is used for data warehousing of petabytes of data?
Choose the Correct Answer

• A. RDS
• B. Elasticache
• C. Redshift
• D. DynamoDB

Answer: C

Explanation:
Redshift is a fully-managed data warehouse that is perfect for storing petabytes worth of data.

NEW QUESTION 21
What does S3 stand for? Choose the Correct Answer

• A. Simple Storage Service
• B. Simplified Storage Service
• C. Simple Store Service
• D. Service for Simple Storage

Answer: A

NEW QUESTION 22
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